[Redo91]

Category A: Portcullis v. Cheval de Frise

The Portcullis allows for has one part to move, and can be contacted in on place, but it must be lifted over the height of the robot passing through. A short robot could possibly have a passive mechanism that allows them to drive under the Portcullis.

The Cheval de Frise could be contacted in one place if the robot was shorter than the width of three of the tilting platforms, but would require some finer alignment. CoG of the robot will need to have attention paid to it.

There is opportunity for one mechanism to be capable of handling both these DEFENSES.

Category B: Moat v. Ramparts

The Moat and Ramparts are two parts of the same issue, a robot's CoG and potential high-centering. Given a low enough CoG and proper clearance, a robot should be able to just as easily pass over either of these.

Category C: Drawbridge v. Sally Port

The Drawbridge and Sally Port are both interesting DEFENSES. They will be easily opened from the courtyard side, needing nothing more than robots capable of traversing the field. Trying to tackle these two DEFENSES from the front will prove to be time consuming.

These DEFENSES can be tackled relatively quickly with the ALLIANCE working together by having one robot open the DEFENSE and the other two robots come through.

Both of these DEFENSES will be time consuming for those that do not plan before the match. They will pose no issue for prepared ALLIANCES.

Category D: Rock Wall v. Rough Terrain

Remember how intimidating the Barrier from Rebound Rumble appeared? The Rock Wall is only a half inch taller. Teams that design for it will have no issue crossing this DEFENSE. Also, any robot capable of traversing the Rock Wall should have no issue with the DEFENSES from Category B.

The Rough Terrain would prove quite a bit more difficult. due to the varying heights and one and a half inch gaps between the tubing pieces, there are plenty of opportunities for robots to get wheels stuck or high center.

Low Bar

The Low Bar is straight forward in its method. If you are too tall, you have to pass by one of the other DEFENSES.